反应详情

10.88 g of a 50% sodium hydride suspension in mineral oil are diluted with 230 ml of absolute dimethylformamide and treated within 30 minutes with a solution of 50 g of p-(p-chlorophenoxy)phenol in 230 ml of absolute dimethylformamide while the temperature rises slightly. The mixture is then stirred at room temperature for 30 minutes. A solution of 18.8 g of chloroacetonitrile in 200 ml of absolute dimethylformamide is added dropwise while cooling the mixture in a water-bath. The mixture is stirred at 50° C. overnight, then cooled and diluted with 1 liter of water. This mixture is extracted five times with 200 ml of ethyl acetate each time. The organic phases are washed twice with 100 ml of 2-N sodium carbonate solution, once with 100 ml of saturated sodium chloride solution and then dried over magnesium sulfate and evaporated. The crude product (80 g of a dark oil) is purified by chromatography on silica gel using toluene for the elution to yield 45 g of [p-(p-chlorophenoxy)phenoxy]acetonitrile (76%) as a colorless oil.

1. temperaturewhile cooling the mixture in a water-bath
2. stirringThe mixture is stirred at 50° C. overnight
3. temperaturecooled
4. extractionThis mixture is extracted five times with 200 ml of ethyl acetate each time
5. washThe organic phases are washed twice with 100 ml of 2-N sodium carbonate solution, once with 100 ml of saturated sodium chloride solution
6. dry with materialdried over magnesium sulfate
7. customevaporated
8. customThe crude product (80 g of a dark oil) is purified by chromatography on silica gel
9. washfor the elution